OJCM  Vol.3 No.2 , April 2013
Simulation and Injection Molding of Ring-Shaped Polymer Bonded Nickel Braze Metal Composite Preforms Based on Rheological and Thermal Analyses
Abstract: Rheological and thermal properties of LD-PE and LD-PE + 65 vol% Ni composite were examined by viscosity, pvt and thermal conductivity measurements at a wide range of shear rate, temperature and pressure. The typical shear-thinning viscosity of LD-PE polymer melt was enhanced up to four times by adding 65 vol% Ni braze metal particles. LD-PE show increasing specific volume versus temperature, decreasing with pressure and braze particle filler content. Variation of specific volume of LD-PE was reduced to 5% by admixing 65 vol% rigid Ni braze metal particles. Thermal conductivity of LD-PE was increased up to 15 times in the composite, reduced by decreasing pressure at temperature exceeding 80℃. Furthermore, thermal analysis was performed in modulated DSC to determine the specific heat capacity in wide temperature range. Viscosity and pvt-data were fitted using Cross-WLF equation and 2-domain Tait-pvt model, respectively. Simulation of LD-PE and LD-PE + 65 vol% Ni composite was performed based on rheological and thermal properties to define processing parameters. Simulation and injection molding of ring-shaped LD-PE + 65 vol% Ni composite braze metal preforms were performed successfully.
Cite this paper: S. Kirchberg, "Simulation and Injection Molding of Ring-Shaped Polymer Bonded Nickel Braze Metal Composite Preforms Based on Rheological and Thermal Analyses," Open Journal of Composite Materials, Vol. 3 No. 2, 2013, pp. 24-29. doi: 10.4236/ojcm.2013.32004.

[1]   D. M. Bigg, “Electrical Properties of Metal-Filled Polymer Composites,” In: S. K. Bhattacharya, Ed., Metal-Filled Polymers: Properties and Applications, Dekker, New York, 1986, pp. 165-226.

[2]   S. T. Tan, M. Q. Zhang, M. Z. Rong and H. M. Zeng, “Effect of Interfacial Modification on Metal Fiber Filled Polypropylene Composites and Property Balance,” Polymer Composites, Vol. 20, No. 3, 1999, pp. 406-412. doi:10.1002/pc.10366

[3]   T. Katsura, M. R. Kamal and L. A. Utracki, “Some Properties of Polypropylene Filled with Metal Fibers,” Polymer Composites, Vol. 6, No. 4, 1985, pp. 282-285. doi:10.1002/pc.750060413

[4]   M. Y. Razzaq, M. Anhalt, B. Weidenfeller and L. Frormann, “Thermal, Electrical and Magnetic Studies of Magnetite Filled Polyurethane Shape Memory Polymers,” Material Science and Engineering: Part A, Vol. 444, No. 1-2, 2007, pp. 227-235. doi:10.1016/j.msea.2006.08.083

[5]   M. Sarasa, D. Gerling, G. Kastinger and A. Schumacher, “Soft Magnetic Materials for Electrical Machines,” Joint Czech Polish Conference on Project GACR430813, Low Voltage Electrical Machines, Brünn, 12-13 November 2003, pp. 91-98.

[6]   S. Kirchberg, U. Hollander, K. Mohwald, G. Ziegmann and F.-W. Bach, “Processing and Characterization of Injection Moldable Polymer-Particle Composites Applicable in Brazing Processes,” Journal of Applied Polymer Science, 2012. doi:10.1002/app.38862

[7]   S. Kirchberg and G. Ziegmann, “Effect of Spherical Iron Silicon (FeSi) Microparticles on the Viscosity Behaviour of Polypropylene Melt,” Applied Rheology, Vol. 21, No. 3, 2011, pp. 1-8.

[8]   R. B. Bird and P. J. Carreau, “A Nonlinear Viscoelastic Model for Polymer Solutions and Melts: Part I,” Chemical Engineering Science, Vol. 23, No. 5, 1968, pp. 427-434. doi:10.1016/0009-2509(68)87018-6

[9]   P. J. Carreau, I. F. MacDonald and R. B. Bird, “A Nonlinear Viscoelastic Model for Polymer Solutions and Melts: Part II,” Chemical Engineering Science, Vol. 23, No. 8, 1968, pp. 901-911. doi:10.1016/0009-2509(68)80024-7

[10]   M. L. Williams, R. F. Landel and J. D. Ferry, “The Temperature Dependence of Relaxation Mechanisms in Amorphous Polymers and Other Glass-Forming Liquids,” Journal of the American Chemical Society, Vol. 77, No. 14, 1955, pp. 3701-3707. doi:10.1021/ja01619a008

[11]   M. M. Cross, “Relation between Viscoelasticity and Shear-Thinning Behaviour in Liquids,” Rheologica Acta, Vol. 18, No. 5, 1979, pp. 609-614. doi:10.1007/BF01520357

[12]   R. Y. Chang, C. H. Chen and K. S. Su, “Modifying the Tait Equation with Cooling-Rate Effects to Predict the Pressure-Volume-Temperature Behaviors of Amorphous Polymers: Modeling and Experiments,” Polymer Engineering and Science, Vol. 36, No. 13, 1996, pp. 1789-1795. doi:10.1002/pen.10574